{"action":"Upgrade github.com/edgelesssys/contrast to 1.21.0 or later.","affected":[{"fixed":"1.21.0","introduced":"0"}],"component":"github.com/edgelesssys/contrast","cve_ids":["CVE-2026-100836"],"ecosystem":"Go","epss":0.00177,"exploited":false,"fixed_versions":["1.21.0"],"ghsa_id":"GHSA-3ccm-4qq2-5wrp","id":"tcs_01M5KETKJ9AZE119MNVYPVE6ZH","modified_at":"2026-09-27T11:56:00.527174184Z","published_at":"2026-07-01T18:47:53Z","references":["https://osv.dev/vulnerability/GHSA-3ccm-4qq2-5wrp","https://github.com/edgelesssys/contrast/security/advisories/GHSA-3ccm-4qq2-5wrp","https://github.com/edgelesssys/contrast/commit/d6584fbff816037472034f7ad6e08cdbab1d870d","https://github.com/edgelesssys/contrast","https://github.com/edgelesssys/contrast/releases/tag/v1.21.0"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-3ccm-4qq2-5wrp","url":"https://osv.dev/vulnerability/GHSA-3ccm-4qq2-5wrp"}],"summary":"Constrata's coordinator transit engine `ciphertextContainer.UnmarshalJSON` panics on attacker-controlled short ciphertexts"}